With its roots in the mid to late 1970s, post-punk is a movement that followed on the heels of the initial Punk Rock explosion. While retaining its roots in punk rock, post-punk is generally more complex and introverted. Also, musicians tend to be much more experimental, often incorporating influences from Dub, Electronic, Funk, Krautrock, Art Rock, and Experimental music. Classic examples include Joy Division, Talking Heads, Public Image Ltd., Gang of Four, Wire, The Chameleons, Magazine, The Birthday Party and The Fall. Unlike its more pop-based counterpart New Wave, post-punk often deals with darker subject matter. Post-punk is also often considered one of the primary predecessors of the wave of Alternative Rock styles that followed in the early 1980s onwards.